/*
 * Copyright (C) 2007-2012 by XDEV Software, All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 3.0 as published by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
package xdev.ui.event;


import java.util.EventListener;

import xdev.ui.FormularComponent;
import xdev.ui.XdevFormular;


/**
 * An event listener to receive events from a {@link XdevFormular}.
 * 
 * @see XdevFormular
 * 
 * @author XDEV Software
 * 
 */
public interface FormularListener extends EventListener
{
	/**
	 * Invoked every time
	 * {@link XdevFormular#setModel(xdev.vt.VirtualTable.VirtualTableRow)} or
	 * equivalent setModel-methods are performed.
	 * 
	 * @param event
	 *            the formular event
	 */
	public void formularModelChanged(FormularEvent event);
	

	/**
	 * Invoked when a value of an underlying {@link FormularComponent} has been
	 * changed.
	 * 
	 * @param event
	 *            the formular event
	 * 
	 * @see FormularComponent#addValueChangeListener(xdev.ui.FormularComponent.ValueChangeListener)
	 * @see FormularEvent#getFormularComponent()
	 * @see FormularEvent#getFormularComponentEventObject()
	 * 
	 * @since 3.1
	 */
	public void formularComponentValueChanged(FormularEvent event);
	

	/**
	 * Invoked every time {@link XdevFormular#save()} or other writing methods
	 * performed successfully.
	 * 
	 * @param event
	 *            the formular event
	 */
	public void formularSavePerformed(FormularEvent event);
}
